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  <title>PECL/mysqlnd_ms 1.3 series</title>

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  <h2 class="title">PECL/mysqlnd_ms 1.3 series</h2>
  <p class="para">
   1.3.2-stable
   <ul class="itemizedlist">
    <li class="listitem">
     <span class="simpara">
      Release date: 04/2012
     </span>
    </li>
    <li class="listitem">
     <span class="simpara">
      Motto/theme: see 1.3.0-alpha
     </span>
    </li>
   </ul>
  </p>
  <p class="para">
   Bug fixes
   <ul class="itemizedlist">
    <li class="listitem">
     <p class="para">
      Fixed problem with multi-master where although in a transaction
      the queries to the master weren&#039;t sticky and were spread all
      over the masters (RR). Still not sticky for Random. Random_once
      is not affected.
     </p>
    </li>
   </ul>
  </p>
  <p class="para">
   1.3.1-beta
   <ul class="itemizedlist">
    <li class="listitem">
     <span class="simpara">
      Release date: 04/2012
     </span>
    </li>
    <li class="listitem">
     <span class="simpara">
      Motto/theme: see 1.3.0-alpha
     </span>
    </li>
   </ul>
  </p>
  <p class="para">
   Bug fixes
   <ul class="itemizedlist">
    <li class="listitem">
     <p class="para">
      Fixed problem with building together with QC.
     </p>
    </li>
   </ul>
  </p>
  <p class="para">
   1.3.0-alpha
   <ul class="itemizedlist">
    <li class="listitem">
     <span class="simpara">
      Release date: 04/2012
     </span>
    </li>
    <li class="listitem">
     <span class="simpara">
      Motto/theme: Query caching through quality-of-service concept
     </span>
    </li>
   </ul>
  </p>
  <p class="para">
   The 1.3 series aims to improve the performance of applications
   and the overall load of an asynchronous MySQL cluster, for example, a MySQL
   cluster using MySQL Replication. This is done by transparently replacing
   a slave access with a local cache access, if the application allows it by
   setting an appropriate quality of service flag. When using MySQL replication
   a slave can serve stale data. An application using MySQL replication must
   continue to work correctly with stale data. Given that the application
   is know to work correctly with stale data, the slave access can transparently
   be replace with a local cache access.
  </p>
  <p class="para">
   <a href="book.mysqlnd-qc.html" class="link">PECL/mysqlnd_qc</a> serves as a cache
   backend. PECL/mysqlnd_qc supports use of various storage locations,
   among others main memory, <em>APC</em> and <em>MEMCACHE</em>.
  </p>
  <p class="para">
   Feature changes
   <ul class="itemizedlist">
    <li class="listitem">
     <p class="para">
      Added cache option to quality-of-service (QoS) filter.
      <ul class="itemizedlist">
       <li class="listitem">
         <span class="simpara">
          New configure option <em>enable-mysqlnd-ms-cache-support</em>
         </span>
       </li>
       <li class="listitem">
         <span class="simpara">
          New constant <em>MYSQLND_MS_HAVE_CACHE_SUPPORT</em>.
         </span>
       </li>
       <li class="listitem">
         <span class="simpara">
          New constant <em>MYSQLND_MS_QOS_OPTION_CACHE</em> to be used
          with <span class="function"><a href="function.mysqlnd-ms-set-qos.html" class="function">mysqlnd_ms_set_qos()</a></span>.
         </span>
       </li>
      </ul>
     </p>
    </li>
    <li class="listitem">
     <p class="para">
      Support for built-in global transaction identifier feature of MySQL 5.6.5-m8 or newer.
     </p>
    </li>
   </ul>
  </p>
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